200416089 玖、發明說明： ㈠發明所屬之技術領域 本發明係關於一種澆鑄噴嘴，用以將熔 方冶金容器移送至一下方冶金容器。本發明 耐熱材料製成之一種澆鑄噴嘴，用以將熔態 杯移送至一鑄錠模’或者自一澆斗移送至一容 ㈡先前技術 澆鑄噴嘴，其設計係用以將熔態金屬自 送至另一冶金容器，同時保護該金屬免於化 其與周圍大氣絕熱者，爲耗損元件，其承受 致於其使用壽命可限制澆鑄時間。邇來說明 獻’用以插入與移除噴嘴之裝置能夠解決此 於歐洲專利第1 9 2，0 1 9與4 4 1，9 2 7號）。例如 附近之噴嘴外壁的沖蝕達到某一程度時，即 至於必須中斷澆鑄之時段內，以一新噴嘴更 嘴。 通常，在此等裝置中，所使用之噴嘴由 一管狀部分與位於其上端之一板構成，此板 以界定一澆道，且此板包含一上表面與一下 面接觸澆道之上游元件，而此下表面形成與 交界之界面’且此下表面包含位於澆道二側 面。 該噴嘴係設計抵抗一澆鑄孔口（如一內 於此一澆鑄孔口之一底板、或依附於插在澆 態金屬自一上 尤其係關於由 金屬自一澆口 ! 口杯。 一冶金容器移 學攻擊，並使 強大應力，以 於最新技藝文 問題（例如見 ，一旦彎月面 在足夠短而不 換已磨損之噴 界定一澆道之 設有一孔口， 表面，此上表 噴嘴下方部分 之二平坦承受 噴嘴）、依附 鑄孔口（例如 200416089 內噴嘴）與澆鑄噴嘴間之一澆鑄金屬流動控制器的一固定 板之平坦下表面，而在引導件中滑動。必須淸楚的是，在 本發明之說明中，當提及澆鑄噴嘴時，係指設計在一裝置 中滑動之噴嘴，而非一固定噴嘴，如一內噴嘴。 已知之裝置，尤其文件EP 192,019中所揭露之裝置， 具有一澆鑄噴嘴，滑動至能夠向上傳遞推力之引導件（推 進裝置）中。此推力係藉安置於與澆鑄孔口有某一距離之 彈簧及驅動桿或搖桿而獲得。此等機件傳遞推力至澆鑄噴 嘴板之各平坦表面。此向上推力將噴嘴板相當緊密地推進 於上游之耐熱元件，尤其一內噴嘴或一耐熱板。 澆鑄噴嘴可爲一整塊，或由數個耐熱元件組合而成。 在大多數情形，該板之下表面與噴嘴之管狀部分的上 端受一金屬罐之保護。 然而’人們經常注意到，在管狀元件與該板間接合處 ’於管狀元件上端之位置，可能出現若干裂痕或微裂痕。 此等裂痕可能產生於維修噴嘴或使用噴嘴時。產生裂痕之 起源’可能爲過大之熱應力、機械應力、或熱機應力。此 等應力係由爲維修裝置中之噴嘴而施加之力量、振動及液 態金屬流動所產生。 在某些情形，此等裂痕導致元件崩解。在另一些情形 ’縱使此等裂痕具有微小尺寸，亦必須加以考慮。液態金 屬在噴嘴中之流動所產生之節流作用必產生低壓，因而導 致吸入相當多之周圍空氣。對液態金屬（尤其鋼）而言， 大氣中之氧或甚至氮，皆爲重要之污染源。而且，在氧與 200416089 很高溫度之聯合作用下，於氧進入處（即裂痕處），耐熱 材料可能產生相當大之劣化現象。其劣化可超過耐熱材料 之局部劣化，且擴大裂痕至必須停止澆鑄之程度。 本技藝最新技術提供數種手段，使噴嘴不易產生裂痕 〇 已知有數種耐熱材料較不易產生裂痕。然而，此等材 料對於其他現象（如沖鈾或腐蝕）通常有敏感性。 揭露於文件WO 0 0/356 14中之另一種解決方式係使用 金屬罐，此罐之下方部分以機械方式強化，而增加其堅度 〇 文件EP 1，1 3 3,3 7 3說明一種噴嘴，包含位於金屬罐與 耐熱材料間之減震中間區域。此區域包含一種材料，其熱 性質使其在周圍溫度下保持堅硬，但在高溫下可變形。此 緩衝區域降低於開始繞鑄時由於熱機應力而形成裂痕或微 裂痕之風險。 無論上述解決方式與其在近幾年之不斷改進帶給本技 藝各種優點，仍有〜些問題存在。 事實上，在已知的用以插入與/或移除噴嘴之裝置中 ，故板始終承受重大之彎應力，此可能爲在管狀部分之上 端形成裂痕之原因。確實有人曾觀察到，繞著平行於引導 件（該板在其中滑動）方向之軸線的彎曲作用，可使上方 板變形。 上述解決方式容許藉阻止彎應力，或藉作用於材料本 身或D貝嘴總成上之技術，以稀釋彎應力，而降低彎應力。 200416089 惟此等解決方式皆昂貴且無法令人完全滿意。 ㈢發明內容 本發明之一目的在於提供一澆鑄噴嘴，其形狀使 能夠抵抗於其使用時所受之應力’且較能夠抵抗於維 置中之噴嘴時所產生之應力。 此噴嘴所具有之形狀，使其適於配合能夠產生有 力分佈之一推進裝置。 尤其，本發明係關於一噴嘴插入與/或移除裝置 鑄噴嘴，其中該噴嘴由界定一澆道之一管狀部分與位 上端之一板構成，此板設有一孔口，以界定一澆道， 板包含一上表面與一下表面，此上表面接觸澆道之上 件，而此下表面形成與噴嘴下方部分交界之界面；該 含位於其上表面相對側且位於澆道二側之二平坦承受 此噴嘴之特徵爲該二表面與澆道軸線形成20°至80° 角度。此管狀部分大體上可爲圓柱形、扁圓形或錐形 板宜爲正方形或長方形。 依本發明，該板之形狀容許增進抵抗產生裂痕之 ，但無須增加對裂痕敏感區域之質量。因而，所涉及 寸實質上與先前技藝噴嘴者相同。 當本發明之噴嘴置入一插入與/或移除裝置時， 承受面係平行於噴嘴之噴出方向。 已觀察到的是，3 0 °至6 0 °間之角度/3，尤其約 之角度，對於抵抗產生裂痕與應力分佈，提供良好之 。對於4 5 °之角度，於臨界區域，在一澆鑄噴嘴中所 其較 修裝 利應 之澆 於其 且此 游元 板包 面。 之/3 。該 特性 之尺 該二 45 ° 結果 測得 200416089 之拉應力，較對於先前技藝90。之角度所觀察者，降低40 至 5 0 %。 依本發明之一特殊實施例，噴嘴板相對於與噴嘴板垂 直且包含澆道軸線之平面，無對稱性。因而，該板在此平 面二側之有用表面並不相同。此使得噴嘴可插入至二位置 ’其一爲澆鑄位置，該板之孔口在此位置對應於上游澆道 ;另一位置爲一中間位置，該板之孔口在此位置不與上游 繞道連通’俾阻擋澆道。當例如藉一停止件所確保之上游 封閉系統故障時，此阻擋作用便可產生用處。由於可藉噴 嘴板本身確保封閉效果，故可避免使用一安全板。 '{衣本發明之噴嘴，其形狀使得吾人所使用之推進裝置 能夠有別於先前技藝所使用者。 #發明因而亦關於用在噴嘴插入與移除裝置之澆鑄噴 嘴°依本發明之推進裝置，其特徵爲所造成推力之施力方 向與澆道軸線形成。 胃推進裝置所施加於澆鑄噴嘴承受表面之推力並非朝 ±且平行於現有裝置中之澆道軸線，而係相對於該軸線傾 斜並朝向澆道。200416089 发明 Description of the invention: ㈠ Technical field to which the invention belongs The invention relates to a casting nozzle for transferring a molten metallurgical vessel to a metallurgical vessel below. A casting nozzle made of the heat-resistant material of the present invention is used to transfer the molten cup to an ingot mold 'or from a hopper to a container. The prior art casting nozzle is designed to self-feed molten metal To another metallurgical container, while protecting the metal from the heat insulation from the surrounding atmosphere, it is a wearing element, and its life can limit the casting time. I will explain that the device for inserting and removing nozzles can solve this problem (European Patent Nos. 192, 0 1 9 and 4 4 1, 9 2 7). For example, when the erosion of the outer wall of a nearby nozzle reaches a certain level, that is, during the period in which casting must be interrupted, a new nozzle is used to replace the nozzle. Generally, in such devices, the nozzle used is composed of a tubular portion and a plate located at the upper end thereof, the plate defining a runner, and the plate includes an upstream element with an upper surface contacting a lower runner, The lower surface forms an interface with the boundary, and the lower surface includes two sides located on the runner. The nozzle is designed to resist a casting orifice (such as a base plate inside one of the casting orifices, or attached to the pouring metal from one to the other, especially with respect to the pouring from the metal! Mouth cup. Learn to attack and make strong stresses for the latest technical problems (for example, see, once the meniscus is short enough without changing the worn spray to define a runner with an orifice, the surface, the lower part of the nozzle on the table above (Both flat bearing nozzles), a flat lower surface of a fixed plate of a metal flow controller that is cast between one of the casting orifices (such as the 200416089 inner nozzle) and the casting nozzle, and slides in the guide. It must be clear that In the description of the present invention, when referring to a casting nozzle, it refers to a nozzle designed to slide in a device, rather than a fixed nozzle, such as an internal nozzle. Known devices, especially those disclosed in document EP 192,019, have A casting nozzle slides into a guide (propulsion device) capable of transmitting thrust upwards. This thrust is provided by a spring and a drive that is placed at a certain distance from the casting orifice. Or rocker. These parts transmit thrust to the flat surfaces of the casting nozzle plate. This upward thrust pushes the nozzle plate quite closely to the upstream heat-resistant element, especially an inner nozzle or a heat-resistant plate. The casting nozzle can be One piece, or a combination of several heat-resistant elements. In most cases, the lower surface of the plate and the upper end of the tubular portion of the nozzle are protected by a metal can. However, 'it is often noticed that the tubular element and the At the position of the joint between the plates at the upper end of the tubular element, there may be several cracks or micro-cracks. These cracks may occur when the nozzle is maintained or used. The origin of the cracks may be excessive thermal stress, mechanical stress, or heat engine Stress. These stresses are caused by the forces, vibrations, and liquid metal flow that are applied to the nozzles in the maintenance device. In some cases, these cracks cause the component to disintegrate. In other cases, even though the cracks are small The size must also be taken into account. The throttling effect of the flow of liquid metal in the nozzle must generate low pressure, which will cause suction Into a considerable amount of ambient air. For liquid metals (especially steel), oxygen or even nitrogen in the atmosphere is an important source of pollution. Moreover, under the combined action of oxygen and the high temperature of 200416089, oxygen enters ( Ie cracks), the heat-resistant material may cause considerable deterioration. The deterioration can exceed the local deterioration of the heat-resistant material, and the cracks are enlarged to the extent that the casting must be stopped. The latest technology of this technology provides several means to make the nozzle less likely to produce cracks. Several heat-resistant materials are known to be less prone to cracking. However, these materials are often sensitive to other phenomena such as uranium flushing or corrosion. Another solution disclosed in document WO 0 0/356 14 is the use of metal cans The lower part of this tank is mechanically strengthened to increase its rigidity. Document EP 1,1 3 3,3 7 3 describes a nozzle comprising a shock-absorbing intermediate area between a metal tank and a heat-resistant material. This area contains a material whose thermal properties make it hard at ambient temperatures but deformable at high temperatures. This buffer area reduces the risk of cracks or micro-cracks due to thermomechanical stresses at the beginning of the casting. Regardless of the above-mentioned solution and its continuous improvement in recent years to bring various advantages to the technology, there are still some problems. In fact, in known devices for inserting and / or removing nozzles, the plate is always subjected to significant bending stresses, which may be the reason for the formation of cracks at the upper end of the tubular portion. Indeed, it has been observed that bending action around an axis parallel to the direction of the guide in which the plate slides can deform the upper plate. The above solution allows the bending stress to be diminished and the bending stress to be reduced by the technique of preventing the bending stress or the technique applied to the material itself or the D-beam assembly. 200416089 However, these solutions are expensive and not completely satisfactory. ㈢ SUMMARY OF THE INVENTION It is an object of the present invention to provide a casting nozzle having a shape capable of resisting the stress applied during its use 'and more resistant to the stress generated when the nozzle is being maintained. The shape of this nozzle makes it suitable for cooperating with a propulsion device capable of generating a strong distribution. In particular, the present invention relates to a casting nozzle for a nozzle insertion and / or removal device, wherein the nozzle is composed of a tubular portion defining a runner and a plate at the upper end, the plate being provided with an orifice to define a runner The plate includes an upper surface and a lower surface, the upper surface contacting the upper part of the runner, and the lower surface forms an interface with the lower part of the nozzle; The feature of bearing this nozzle is that the two surfaces form an angle of 20 ° to 80 ° with the axis of the runner. The tubular portion may be generally cylindrical, oblate or conical. The plate is preferably square or rectangular. According to the present invention, the shape of the plate allows the resistance to cracks to be increased, but it is not necessary to increase the quality of the areas sensitive to cracks. Thus, the dimensions involved are essentially the same as those of the prior art nozzles. When the nozzle of the present invention is inserted into an insertion and / or removal device, the receiving surface is parallel to the ejection direction of the nozzle. It has been observed that an angle between 30 ° and 60 ° / 3, especially about an angle, provides good resistance to cracks and stress distribution. For an angle of 45 °, in the critical area, it is more suitable for repairing in a casting nozzle, and it is covered with this plate. Of / 3. The scale of this characteristic is 45 °. The tensile stress of 200416089 is measured, compared with 90 for the previous technique. The angle of the observer is reduced by 40 to 50%. According to a special embodiment of the present invention, the nozzle plate has no symmetry with respect to a plane perpendicular to the nozzle plate and including a runner axis. Therefore, the useful surface of the board on both sides of this plane is different. This allows the nozzle to be inserted into two positions. One is the casting position, where the orifice of the plate corresponds to the upstream runner; the other is an intermediate position, where the orifice of the plate is not in communication with the upstream bypass. '俾 blocked the runner. This blocking effect can be useful when, for example, the upstream closed system is secured by a stop. Since the sealing effect can be ensured by the nozzle plate itself, the use of a safety plate can be avoided. '{The nozzle of the present invention is shaped so that the propulsion device used by us can be different from the user of the previous technique. The invention therefore also relates to a casting nozzle used in a nozzle insertion and removal device. The propulsion device according to the invention is characterized in that the direction of force of the resulting thrust is formed with the axis of the runner. The thrust force applied by the gastric propulsion device to the bearing surface of the casting nozzle is not ± and parallel to the axis of the runner in the existing device, but is inclined relative to the axis and faces the runner.
Ut裝置在澆鑄噴嘴中所產生之彎應力低於先前技藝裝 置中者。所造成之推力包含一垂直分量，確保與上游元件 緊密接合，且包含一水平分量。此水平分量之好處爲其導 致耐熱材料受壓，因而容許減少裂痕之產生與/或散佈。 依本發明推進裝置所造成之推力，其施力角度α必須 爲1 0 °至7 0。之角度。事實上，小於1 〇。之角度相應於施 200416089 加幾乎垂直之力量，因而對於產生裂痕現象無顯著正面/影 響。當施力角度大於7 0。時，垂直分力即不足以確保在噴 嘴板與上游元件間有良好之接觸與良好之緊密性。 已觀察到的是，對於抵抗產生裂痕與應力分佈而言’ 3 G 。至6 0 °之推力角度α，尤其約4 5 ° ，提供優異之結果。The bending stress generated by the Ut device in the casting nozzle is lower than in the prior art device. The resulting thrust includes a vertical component, ensuring tight engagement with upstream components, and a horizontal component. The benefit of this horizontal component is that it causes compression of the heat-resistant material, thus allowing for the reduction and / or spread of cracks. According to the thrust force of the propulsion device according to the present invention, the angle of application force α must be 10 ° to 70 °. Angle. In fact, it is less than 10. The angle corresponds to the application of 200416089 plus an almost vertical force and therefore has no significant positive / influence on the occurrence of cracks. When the force angle is greater than 70. In this case, the vertical component force is not enough to ensure good contact and good tightness between the nozzle plate and the upstream components. It has been observed that ' 3G is resistant to cracking and stress distribution. Thrust angle α to 60 °, especially about 45 °, provides excellent results.
對於45。之推力角度，於一澆鑄噴嘴之臨界區域，所測得 之拉應力，比相應於目前技藝之90 °推力角所測得者’低 40至5 0%。45 °之角度係在確保緊密性之推力垂直分量與 推力水平分量間的一良好折衷角度。事實上，必須有能夠 使噴嘴與上游元件間確保緊密接觸之一最小垂直分量。角 度α愈增大，推力即必須愈增大，以確保有相同之垂直分 量。太大之推力可能產生不可忽略之機械問題，尤其對於 彈簧之需求增大，且減低彈簧壽命。 45 °之角度亦便於製造澆鑄噴嘴推進裝置。 例如藉由彈簧或經由一元件（如一搖桿）之介入可直 接施加推力於澆鑄板之承受面上。For 45. The thrust angle measured in the critical area of a casting nozzle is 40 to 50% lower than that measured in a 90 ° thrust angle corresponding to the current technology. The 45 ° angle is a good compromise between the vertical component of thrust and the horizontal component of thrust to ensure tightness. In fact, there must be a minimum vertical component that ensures close contact between the nozzle and the upstream element. The greater the angle α, the greater the thrust must be to ensure the same vertical component. Too much thrust may cause non-negligible mechanical problems, especially the increased demand for springs and reduced spring life. The 45 ° angle also facilitates the manufacture of the casting nozzle thruster. For example, a spring or the intervention of a component (such as a rocker) can directly apply thrust to the bearing surface of the casting plate.
本發明之另一方面係關於一鑄造機，包含一噴嘴插入 與交換裝置，此裝置中包含依本發明之澆鑄噴嘴。 該澆鑄噴嘴藉該推進裝置，與上游元件緊密接觸。推 進裝置之推力係施加於澆鑄噴嘴板之二平坦承受面上。該 澆鑄機亦包含一導軌系統，其能夠接納澆鑄噴嘴之二承受 面，且使得一新的澆鑄噴嘴能夠插入澆鑄位置，並能夠使 磨損之澆鑄噴嘴被迫離開澆鑄位置。 該導軌系統提供一承受面，其與澆鑄軸線間所形成之 -10- 200416089 角度，實質上等於澆鑄噴嘴板與該澆鑄軸線間形成之角度 β。 爲使讀者更瞭解本發明，茲參照各附圖說明之，此等 附圖顯示本發明之各特別實施例，但不以任何方式限制本 發明。 ㈣實施方式 第1圖顯示依先前技藝之一澆鑄噴嘴（1 )，包含一板 (2 )與一管狀部分（3 )。平坦承受面（5 )與澆道軸線（ 7 )間形成9 〇 °之角度。推力（4 )直立，且平行於澆道軸 線（7 )。此先前技藝澆鑄噴嘴中所產生之應力可能導致在 管狀部分（3 )之上端形成裂痕。 第2圖與第3圖顯示依本發明之澆鑄噴嘴（i )。澆鑄 噴嘴（1 )之板（2 )呈截錐形。平坦承受面（5 )形成2 0。 至8 0 °之角度/3，但無需增加板（2 )之質量。 第3圖顯示角度α與/3。所造成推力與澆道軸線間形成 2 1 °之角度α。平坦承受面與澆道軸線間形成69。之角度ρ 〇 第4圖顯示先前技藝推進裝置（8)。所造成推力（4 )係經由一搖桿（1 Q )，而直立、平行施加於澆道軸線（7 )° 第5圖顯示依本發明之推進裝置（8 )。所造成推力（ 4 )係經由一搖桿施加。 第6圖顯示依本發明之推進裝置（8 )。所造成推力（ 4 )係經由各彈簧（1 1 )直接施加於各承受面。 -11 - 200416089 (E)圖式簡單說明 第1圖顯示依先前技藝之一澆鑄噴嘴，及施加於其各 平坦承受面之垂直推力。 第2圖顯示依本發明之澆鑄噴嘴，及施加於其各平坦 承受面之推力。 第3圖顯示依本發明之澆鑄噴嘴，角度α與/3分別代表 所造成推力與澆道軸線間之角度、及平坦承受面與澆道軸 線間之角度。Another aspect of the present invention relates to a casting machine including a nozzle inserting and exchanging device including a casting nozzle according to the present invention. The casting nozzle is in close contact with the upstream element by the pushing device. The thrust of the pushing device is applied to the two flat bearing surfaces of the casting nozzle plate. The casting machine also includes a guide rail system that can receive the two bearing surfaces of the casting nozzle, and enables a new casting nozzle to be inserted into the casting position, and enables the worn casting nozzle to be forced out of the casting position. The guide rail system provides a bearing surface, and an angle formed between the casting axis and the casting axis is substantially equal to an angle β formed between the casting nozzle plate and the casting axis. In order for the reader to better understand the present invention, it is described with reference to the accompanying drawings, which show specific embodiments of the present invention, but do not limit the present invention in any way. ㈣Embodiment Figure 1 shows a casting nozzle (1) according to one of the prior arts, comprising a plate (2) and a tubular portion (3). An angle of 90 ° is formed between the flat bearing surface (5) and the runner axis (7). The thrust (4) is upright and parallel to the runner axis (7). The stress generated in this prior art casting nozzle may cause cracks to form on the upper end of the tubular portion (3). Figures 2 and 3 show the casting nozzle (i) according to the invention. The plate (2) of the casting nozzle (1) has a truncated cone shape. The flat bearing surface (5) forms 20. Angle to 80 ° / 3, but without increasing the mass of the plate (2). Figure 3 shows the angles α and / 3. The resulting thrust forms an angle α of 21 ° with the axis of the runner. 69 is formed between the flat bearing surface and the runner axis. Angle ρ 〇 Figure 4 shows the prior art propulsion device (8). The resulting thrust (4) is applied upright and parallel to the runner axis (7) through a rocker (1 Q). Figure 5 shows the propulsion device (8) according to the invention. The resulting thrust (4) is applied via a rocker. Figure 6 shows the propulsion device (8) according to the invention. The resulting thrust (4) is directly applied to each bearing surface via each spring (1 1). -11-200416089 (E) Brief description of the drawing Figure 1 shows the casting nozzle according to one of the previous techniques, and the vertical thrust applied to its flat bearing surface. Fig. 2 shows a casting nozzle according to the present invention and the thrust force applied to each flat bearing surface thereof. Fig. 3 shows the casting nozzle according to the present invention. The angles α and / 3 represent the angle between the thrust and the runner axis, and the angle between the flat bearing surface and the runner axis, respectively.
第4圖顯示依先前技藝之一推進裝置。 第5圖與第6圖顯示依本發明之推進裝置。Figure 4 shows the device being propelled according to one of the prior art. Figures 5 and 6 show a propulsion device according to the invention.
元件 付號 說 明 1 澆 鑄 噴 嘴 2 板 3 管 狀 部 分 4 所 造 成 推 力 5 平 坦 承 受 面 6 澆 道 7 澆 道 軸 線 8 推 進 裝 置 9 上 游 元 件 10 搖 桿 11 彈 簧 -12-Component designation 1 Casting nozzle 2 Plate 3 Tubular section 4 Thrust force 5 Flat bearing surface 6 Sprue 7 Sprue axis 8 Pushing device 9 Upstream element 10 Rocker 11 Spring spring -12-